Short Story: Strange Loops

It always started like this. He would snap into attention standing on a small secluded bridge. Sometimes he blew his brain off straight away as he awakened. But what was the point now? Twenty times in a row had changed nothing. Why would one more make a difference? Other times he shot the man next to him and hiked as far as he could before falling asleep and ending up back on the bridge. Eight days was the farthest he had gotten without sleep, and that was even using his amphetamine surplus....